Metal-twisting mechanism



w. J. YOUNG.

METAL TWISTING MECHANISM.

APPLICATION FILED MAY 15, 1920. 1,41 5, 502. Patented May 9, 1922.

. 2 SHEET$SHEET I.

INVENTOR 7W7 A h. T 0

9 O O D O I M W. J. YOUNG. METAL Twnsnwa MECHANISM. APPLICATION FILED MAY 15. 1920.

Patented May 9, 1922.

2 SHEETS-SHEET Z.

ATTORNEY;

V ranged in a press;

- i iic WILLIAM JfYonne, ornoonnsrnn, NEW YORK, assrcnoa r0 Yonnes'wnonenr IRON wonKs, or aocnns'rna, new roan, A CORPORATION or new YORK.

METALTWISTING MECHANISM.

' Application filed May 15,

T 0 all whom it may concern Be it known that I, WVILLIAM J. YOUNG, a citizen of the United States, and resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Metal Twisting Mechanisms, of which the following is a specification. v

Thepresent invention relates to a metal twisting mechanism and more particularly to the type in which a strip of metal is twisted between its ends, an object of this inven tion being to provide a simple and inexpensive construction which may be readily placed in a press to be operated by the latter. Still another object of the invention is toprovide an improved twisting mechanism which will twist one portion of a metal strip to a position at right angles to portions on opposite sides thereof so that the said first named portion has its plane lying substantially in a plane with one edge of the portions lying on opposite sides thereof.

To these and other ends the invention consists of certain parts and combinations of parts, all of which will be hereinafter described, the novel features being pointed out in the appended claims.

In the drawings:

Fig. 1 is a plan view of a machine constructed in accordance with this invention;

Figs. 2 and 3 areplan views at right angles to each other showing a metal strip twisted in accordance with this invention;

Fig. 4 is an end view of the machine ar- Fig. 5 is a section through the machine on the line 55, Fig. 1, showing the parts arranged in the press, the dotted lines illustrating the position to which the movable die is shifted by the press; and

Fig. 6 is a plan view of one of the lower twisting dies.

Referrin more particularly to the drawings, 1 indicates a base plate which supports, in this instance, two spaced clamps for a metalstrip 2 so that a portion be tween the clamps may be twisted. Each of these clamps embodies a fixedjaw 3 and a movable jaw 4. Each fixed jaw has a block 10 secured thereto andprovided with four shoulders or abutments'lOl any one of which may be brought into engagement with the upper edge of the strip, the difi'erent'abuta Specification of Letters Patent.

1920. Serial No. 381,650.

ments being provided to accommodate strips of difierent dies. The movable jaw is moved through a screw 5,v which is mounted to cumin an upward extension 6 formed integrally with the base 7 from which thestationaryjaw 3 projects. A hand wheel 8 is provided on the screw for moving the movable jaw toward and from the fixed or stationary jaw In orderto accommodate strips 20f different lengths, the base plate 1 is provided.

the rear bolts also being utilized for hold-' mg the blocks 10 to the stationary jaws 3... Arranged to operate between the twoclamping devices upon the strip 2 is a twisting mechanism comprisingfln this instance, two separated twisting devices, each consisting of a pairof dies, the members of each pair operating ,uponopposite edges ofthe strip 2. One of these dies indicated at 11, is preferably in the form of a plate adjustablymounted upon thebase 1 as by. being held thereto by screws 12'enga'geable in the 3 series of openings 13 extending longitudinally of the'base and permitting the positioning ofthe plate 11 at different pointsv on the base 1. This die plate 11 preferably has a deflecting face 14: formed by concaving the upper surface, the front edge of this concave lying substantially under the lower edge of the strip 2 before the latter is twisted. The other twisting die is preferably in the form of a member 15 pivoted at 16 to a frame 17 which is adjustable longitudinally of the base 1 preferably by, providing the base 1 with a longitudinally eX-" tending groove .18 and with a longitudinally extending series of bolt ope'nings-19,the i frame 17 having a rib 20 on'its under side:

operating inthe groove .18 and said frame carrying also bolts 21 engageable within the. 1 openings 19 to secure the frame 17 in its adjusted position. The movable or pivoted die 15 maybe normally held in a raised position by a spring 15 secured to the die and to the frame17 and has a deflecting-surface? 22 formed by one face of a hardened plate 23. The plane of' this surface 22 issuch aa a May 9,1922

.55 widths without changing the so I that, as the die member 15 swings about its axis 16, the surface moves angularly with reference to the stationary die 11. This deflecting surface 22 will shift the upper edge of the strip outwardly or in one direction, while the deflecting surface 14, which engages the lower edge of the strip 2, will shift such edge inwardly or in the opposite direction. The axis 16 as well as the surface 22 are arranged so that eventually he surface 22, while at the first part of its twisting action being arranged at an angle other than a right angle to the plane of the stationary die 11, will eventually move into parallel relation with said die so that the portion of the strip 2 engaged by the twisting dies will be at right angles to the end portions and substantially in the plane with the lower edge of the end portions. In order to draw the top edge of the flat strip rearwardly to the plane of the end portions. a shoulder or abutment 24 is provided at the outer end of the deflecting surface 22 and with this shoulder or abutment the upper edge of the strip will engage after the strip has been partially twisted. After such engagement and during the continued movement of the upper die 15, the twisted portion of the strip will be shoved rearwardly so that the lower edge of the strip will travel on the concave deflecting surface 1% and eventually the twisted portion of the strip will lie horizontally with its top edge in a plane with the vertically arranged end portions and also in a plane with the lower edges of the end portions as shown in dotted lines in Fig. 5. For the purpose of permitting the shoulder 24 to be moved below the upper face of the stationary die 11, said shoulder is narrower in width than the die member 15 and is adapted to be received in a notch 28 formed in the front edge of the die member 11. A shoulder in the form of a pin 29 may be provided for engagement with the lower edge of the strip to prevent outward movement of the latter.

The mechanism as a whole is, in this instance, designed for use in connection with a metal press and to this end, its bottom plate is bolted upon the stationary wall 25 of the press while the pivoted dies 15 are adapted for engagement by the movable plunger 26 of the press, each die having; a hardened metal insert 27 projecting from its upper side for engagementwith the movable press member 26.

The operation of the invention will be understood from the foregoing description, but it may be summarized as follows:

A strip 2, preferably cold, although it may be hot, is clamped at opposite ends in the two spaced clamping devices after the latter have been adjusted to correspond to the twist tobe made in the strip. The'two twisting devices are also adjusted on the base frame to correspond to this twist, the upper dies 15 having their deflecting surfaces lying in engagement with the upper edge of the strip and the lower edge of the strip resting upon the lower dies 11 adjacent the forward portion of the concave defleeting surface 1d. The machine as a whole is then inserted in a power press, being bolted to the base of the press, and the plunger 26 of the press is operated. 'The dies 15, first through their deflecting surfaces 22, shift the central portion of the strip outwardly until the top edge of the central portion engages the shoulders 24. Thereafter the shoulders in connection with the surfaces 22 act on the central portion of the strip to cause such portion to assume a horizontal position, the lower edge of the strip being guided in its rearward movement by the concave deflecting surfaces 14. Eventually, the central portion of the strip assumes a position at right angles to the end portions, the top edge of the twisted por tion being brought substantially to the plane of the front faces and lower edges of the vertical or clamped end. portions of the strip.

From the foregoing it will be seen that there has been provided a metal twisting mechanism which is simple in operation and effectively twists an intermediate portion of a metal strip to a position at right angles to end portions of such strip. This is effected by two die members, one of which shifts one edge of the strip in one direction while the other deflects the other edge of the strip in the opposite direction. One of these die members is stationary and has a curved deflecting portion, and the other is movable and has a straight deflecting face which engages the opposite edge at an angle other than at right angles to the plane of the strip, and during the twisting shifts to a position at right angles, an abutment being provided which shifts the edge toward the plane of the strip also during the twist- 110 mg.

What I claim as my invention and desire to secure by Letters Patent is:

1. A machine for twisting flat metal strips comprising a pair of spacedclamps by which 115 the strip is held, and a twisting mechanism operating between the clamps and embodyins! means cooperating with opposite edges of the strip to move a portion of one edge laterally out of line with those portions held 120 by the clamps and a portion of the inner edge into alinement with the portions of the first named edge held by the clamp.

2. A machine for twisting flat metal strips comprising a pair of spaced clamps by which 125 the strip isheld, and a twisting mechanism operating between the clamps and embodying two dies cooperating with opposite edges of the strip to move a portion of one edge laterally out of line with those portions held 130 by the clamps and a portion of the other edge into alignment with the portions of the first named edge held by the clamps.

3. A machine for twisting flat metal strips comprising a pair of spaced clamps by which the strip is held, and a pair of twisting dies for cooperating with opposite edges of the strip, one of said dies having a face deflecting a portion of one edge of the strip in one direction out of line with the portions of such edge held by the clamps, and the other having a face deflecting a portion of the other edge of the strip substantially in aline with the portions of the first named edge held by the clamps.

4. A machine for twisting flat metal strips comprising a pair of spaced clamps by which the strip is held, and a pair of twisting dies for cooperating with opposite edges of the strip, one of said dies being stationary and having a face for deflecting a portion of one edge of the strip in one direction out of line with the portions of such edge held by the clamps, and the other being movable and having a face for deflecting a portion of the other edge of the strip in the other direction substantially in a line with the portions of the first named edge held by the clamps.

- 5; A machine for twisting flat metal strips comprising a pair of spaced clamps by which a strip is held, and a pair of twisting dies cooperating with the strip between v the clamps, one of said dies being stationary and having a face for deflecting aportion of one edge of the strip'in one direction out of line with the portions of such edge held by the clampa'and the other of said dies being movable and having adeflected face shifting angularly with reference to its plane to shift a portion of the oppositeedge'of the strip in the opposite direction substantially in a line with the portions of the first named edge held by the clamps.

6. A machine for twisting flat metal strips comprising a pair of spaced clamps by which a strip is held, and a pair of twisting dies for cooperating with the strip between the clamps, one of said dies being stationary and having the plane of its work face substantially vat right angles to the original plane of the strip, the said die deflecting a portion of one edge of the strip in one direction out of line with the portions of such edge held by the clamps, and the other of said dies being movable and having a defleeting face engaging the opposite edge of the strip at an angle other than at right angles to the plane of the strip, said face being movable angularly to assume a position at right angles to the original plane of the strip and to shift a portion of the other edge of the strip substantially in. a line with the portions of the first named edge held by the clamps.

7. A machine for twisting flat metal strips comprising a pair of spaced clamps by which a strip is held, and a pair of twisting dies for cooperation with opposite edges of the strip between the clamps, one of said dies being stationary and having a c'oncaved deflecting face for deflecting one edge of the strip in one direction and the other of said dies being movable and having a deflecting face for shifting the opposite edge of the strip in the opposite direction, said. last named'defle'cting face having its plane, when first engaging the strip, at an angle other than a right angle to the original plane of the strip, said deflecting face being movable angularly to assume finally a position at right angles to'the original plane of the strip. T

8. A machine for-twisting flat metal strips comprising a pair' of spaced clamps by which the strip is held, and a pair of twisting dies fOrco-o'perating withthe strip between the clamps, one of which is stationary and has a concave face over which one edge-of the strip shifts laterally out of the plane of the edge portions held by the clamps, and the other of whichis movable for shifting said first mentioned edge over the concave face and deflecting the opposite edge of the strip in the opposite direction tothe plane of the portions of "the first mentioned edge held by the; clamps.

A machine for twisting flat metal strips comprising a pair of spaced clamps by which the strip is held, and a pair of twisting dies for cooperating with opposite edges of a edge over the face and deflecting the strip in r the opposite direction to the plane of the portions of the other edge held by the clamps.

10. A machine for twisting flat metal strips comprising a pair of spaced clamps by'which the strip, is held a pair of twisting dies for cooperating with opposite edges of a strip held by the clamps, one of said dies being stationary and having a face for deflecting one edge of the strip in one direction and the other of said dies having a deflecting face for deflecting the opposite edge of the strip in the opposite direction,

said last mentioned deflecting face engaging its edge in a plane at an angle other than at right angles to the original plane of said strip, said face being mounted to move angularly during the twisting to a position at right angles to the original plane of the strip, and an abutment carried by the movable die to cooperate with the adjacent edge,

of the strip in order to shift said edge toward the original plane of the strip during the twisting.

11. 21 machine for twisting flat metal strips comprising a pair of spaced clamps by which the strip is held, and a pair of twisting dies for cooperating with the strip held by the clamps. one of said dies being stationary and having a deflecting face over which the cooperating strip edge shifts laterally out of the plane of the edge portions held by the clamps and the other of said dies being pivotally mounted and having a deflecting face arranged to shift its cooperating strip edge in the opposite direction, said pivotally mounted die also having an abutment for cooperating with the adjacent strip edge in order to shift said edge to the plane of the portions of the other edge held by the clamps.

12. A machine for twisting flat metal strips comprising a pair of clamps by which the strip is held, a pair of twisting dies cooperating with the strip held by said clamps, one of said dies being stationary and having a concave face for deflecting one edge of the strip in one direction, and the other of said dies being pivoted and having a flat deflecting face the plane of which, when first engaged the opposite edge of the strip. lies an angle other than a right angle to the original plane of the strip, said plane of the deflecting face of the pivoted die moving during the twisting to a plane substantially at right angles to the original plane of the strip.

13. A machine for twisting fiat metal strips comprising a pair of spaced clamps by which the strip is held. a pair of twisting dies cooperating with a strip held by said clamps. one of said dies being stationary and having a concave face for deflecting one edge of the strip in one direction. and the other of said dies being pivoted and having a flat deflecting face. the plane of which when first engaging the opposite edge of the strip, lies at an angle other than a right angle to the original plane of the strip, said plane of the deflecting face of the pivoted die moving during the twisting to a plane substantially at right angles to the original plane of the strip, and an abutment on said pivoted die cooperating with the adjacent edge of the strip to shift said edge toward the original plane of the strip as the strip is twisted at right angles to its original plane.

1 A machine for twisting flat metal strips comprising a pair of spaced clamps by which the metal strip is held, and a pair of twisting dies for cooperating with opposite edges of the strip between said clamps, one of said dies being stationary and having a face for deflecting one edge of the strip in one direction. and the other of said dies having portions for deflecting the opposite edge of the strip in the opposite direction and for moving said edge toward the original plane of the strip.

15. A machine for twisting flat metal strips comprising a base plate. two clamps relatively adjustable on said base plate, and two twisting devices adjustable relatively to each other and to the clamps on said base plate and each comprising a stationary die having a surface over which one eoge of a strip shifts laterally out of the plane of the edge portions held by the clamps, and a movable die for deflecting the opposite edge of the strip in the opposite direction to the plane of the portions of the other edge held by the clamps. I

WILLIAM J. YOUNG. 

